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LEASES (Supplemental Cash Flow Information) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Cash paid for amounts included in the measurement of lease liabilities: |  |  |  |
Operating cash flows used for operating leases | $ 17,952 | $ 14,709 | $ 51,324 | $ 43,510
Right-of-use assets obtained in exchange for lease obligations: |  |  |  |
Operating leases | 2,277 | 14,251 | 45,205 | 67,798
Non-cash net increase due to lease modifications: |  |  |  |
Operating lease right-of-use assets | 11,726 | 3,233 | 7,744 | 6,383
Operating lease liabilities | $ 11,708 | $ 3,199 | $ 7,719 | $ 6,451

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